its not that the herb is harsh,its hard to explain,with the group of guys that come over for pool night,everyone is on the wax plan,but when ever someone shows up with some fire,man all off us dabbers have crazy cough fits,, its not a cant handle it kind of cough, is almost like a lung irritation cough,if that makes sense. At first I thought it was just my smoke,but then I made a Denver weekend and the next 4 species does the same.